Filter.



- PATENTED MAY 28, 1907. B. m. WADE.

FILTER.

nrmouxon nun 10v. 15,1900.

2 sumsun! 1.

z Q 1 ICIDXCDXL-DI 'No.s54,972. v PATENTBD MAY28,1907.

B, M. WADE.

FILTER.

I APPLICATION FILED HOV-15, 1906.

2 SHEEN-SHEET 2.

I UNITED STATES PATENT OFFICE.

FILTER- Application filed November-1 To all 107mm it may concern:

Be it known that l, ERWIN .\l. Cum, at (111201) of the l-ntted States, ftsltllflg at. Los

- \ngeles. in the county of lros r-tngeles and State of (alil'ornia. have invented new and useful improvements in Filters, of which the following is a specification.

.\l\' invention relates to that class of filters in \\'lll('ll the material being filtered is subjected to the vacuum process with the resulting adhesion of a rake to the outside of the tilterin; medium: and an object thereof is to provide an apparatus which is composed of a plurality of chambers in which a vacuum or suction is created at inter\'nls, at'ter which the chambers are subjected to a cleaning or blowingoperation.

Another object of this invention is to provide an apparatus in which the chambers are subjected to analternate suction, blowing' and washing operation. which operations are continuous while the machine is in operation.

Another object of this invention is to pro- .vide an apparatus which may be utilized in the filtration or traction of the eyanid solutions from slimes.

Another object of this invention is to provide an apparatus that may be used in the clarification of sugarjuiees or in any other work in which a tiller press could be used.

1A further object is to provide an apparatus which is simple in construction and highly etlicieut in operation.

l accomplish these objects by means of the apparatus described herein and illustrated in the accoinpanyin; drawings in which:

Figure l--is a plan view of my apparatus with parts broken away so as to more clearly disclose the construction. Fig. 2is an end elevation part ly in section of the apparatus in its normal position. Fig. 3is anendelevation part lyin section of then )paratus showing the'limit of movement of the valve cap. Fig. t-is a central longitudinal section of the complete apparatus taken on line 4-4 of Fig. '1. Fig. 5isa transverse section taken on line 55 of F ig. 1. Fig. 6-is a perspective detail showing the method of securing the screens to the revolving drum.

Referring to the drawings 10 indicates a suitable base to which are secured bearin' frames 1]. .These frames are provided wit journal boxes 12, in which is mounted :1. revoluble shaft. 13. Rigially secured upon this revoluble shaft is a. drum 14, which is "com- Specification of Letters Patent.

ratmted May 28, 1907.

5,1908. Serial No. 343,583.

posed of heads 15 and 16. These heads are connected by means of longitudinal partitions 1?,the inner longitudinal edgesof which i enter grooves 18 in the shaft 13, the transverse edgespntering grooves 19 in the heads 15 and 16 so as to form liquid tight compartments 20. Each of these compartments are provided with inclined bottoms 21, the purpose of which is to rapidly direct the liquid that is drawn into them toward their outlets. The inner faces of the heads 15 and 16 are otfset as at 22 to form seats for the reception of the filtering frames 23. These filtering frames (here shown as four in number to correspond with the number of COIXlPfiTlH o ments) preferably consist of end pieces 24, suitably joined together by means of braces 25. Secured to the top of these frames in a suitable manner are screens 26, preferably formed of wire, on the outside of which is se cured the filtering medium 27, which is shown in this instance as consisting of a number of layers of fabric, preferably burlap or tntit'ns.

On one end of the shaft- 13 is mounted a pulley 2b to which power may be applied to operate the apparatus, and the other end of t e shaft is enlarged as at 29, and has a series of ports 30 drilled longitudinally therein, each of which communicates with a separate 8 compartment of the drum. The periphery of the enlarged portion of the shaft 13 is provided at its inner end with an annular flan e 31, by means of which the drum 14 is rigid y secured to the revoluble shaft and its outer edge is providedwith an annular shoulder 32 against the outer face-of which an annular valve cap 33 is ads ted to bear. This valve cap is provided wit a series of orts 34 and 35, Wl'llCh in this instance are i ustrated as three in number, which are adapted to register with ports 30 in the enlarged portion 28 of shaft 13, as will hereinafter be more particularly described. Valve ca. 33 is held in means of tension spring 36, which is mounted on a. bolt 37 which is secured to the enlarged end of shaft 13, the outer end of bolt 37 is provided with nuts 38 by meah's of which the tension on the .valve cap through the medium of the sprin ma be increased or diminished. The periphery of the valvqcap near the face which contacts with the tin-- nuler shoulder 32 is provided with a lug 39,. which is adapted to be engaged by a'plurality x lo engagement with the end of t e shaft'13 by' rod i is an arm 44 on the outer end of which is atinent with lug 3%) and the valve cap resumes medium.

of spring pres sed dogs 40, which are pivotally mounted in bearings 41 secured to the en- 2 larged end of shaft 13.

During the operation of the apparatus and as soon as the outer end of one of the spring pressed dogs that happens to be in engage-- ment with lug 39 on t. :e valve cap contacts with cam 42 which is adjustahl secured on bracket 43, the dog is released than engage- 1ts normal position as shown in Fi 2 of the drawings. Radially secured to valve cap 33 tached a chain 45. which is adapted to pass over a roller 46 rovoluhly mounted ona pin- 47, which is secured to an arm '48 of the bracket 43. The lower end of chain is provided with a weight 49 by means of which the valve cap is returned to its normal position when the soring pressed dog is released by the cam, t e arm 44 contacting with bracket 43 which serves to limit its Further movement. If desired a'coil spring (not shown) having its lower end secured to the base could be substituted for the weight.

Secured to one side of each of the frames 11 are vertical uprights 50, which are connected at their outer ends by means'oi cross piece 51. Depending from crosspiece 51 is a bracket 52 which is adapted to hold the outer end of the distributing trough 53 clear of the revolving drum.

Secured to frames 11 by brackets 5-1 is a spray pipe 55 by means of which a spray of water or a weak solution of cyanid may be applied to the outer periphery of the drum so as to thorou hly extract all of the remaining solutions that they may be held by the slimes after the initial suction has beenv ap lied.

f it is found desirable the drum 14 can be divided into a reater number of compartments than are here shown and a number of sprays similar to the one above described can be located adjacent the periphery of the drum at points where the several .compa'rtments are under suction. 0n the opposite side of frames 11 and secured thereto in bear- I ings is a. similar spray pipe 56, which facilitates the cleansing process of the filtering Journalcd in brackets secured to frames 1 l L is a scraper 57, which preferably consists of a wire frame which is held in contact with the drum 14 by means of a weighted handle 58. p The purpose of this scraper is to remove the cake formatiop which rapidly accuniulatc! on the lilterin medium. Located beneath the drum and at the point where the scraper 57 contacts with the drum is a launder .99. into which the cake that is scraped off will fall and he carried off by the water from the s ray 55, to some convenient point (not. shown}. c

The operation of the apparatus is as 'folmeans to rotate said drum.

louse-Power is applied to pulley 28 by means of which a continuous rotary motion is imparted to drum H. The slimcs containing the cyanid solutions are then led to the outer surface of the drum from the distributing trough 53, and at the same time the exhaust and pressure pumps (not shown) are .ut in operation. Flexible pipes 60 whic are connected from ports 34 to the exhaust pump maintain acontinuous exhausz; on two of the compartments of the drum which are in register with the ports 34 in the valve cap. Pipe 61 which leads from port 35 in the valve cap 33 connects to a pressure pump by means of which a continuous pressure of air is supplied to one of the lower chambers. This pressure of air is sufficient with the aid of the water from the spray ipe to dislodgc the cake formation from t filtering medium. The ports 34 in the valve cap 20 from which lead. exhaust pipes (it) are held in engagementwith the ports leading from the compartments that they are in register with until the s ring rcssed dog that is in engagement wit! the ug on the cap is released by the cam 42, the weight 47 returning the cap to its normal position as shown in Fig. 2 of the drawings, so that while two of the compartments are being continually exhausted one of the remaining compartments is under pressure from pipe 61, thereby relieving the filtering" medium f the mike formation. As the drum revolves the compartment under pressure recedes from the pipe 55 until it is about 90 therefrom. when the latch 40 is tripped and the valve cap is returned to the position shown in Fig. 2 bringing a compartment under pressure adjacent to pipe 55.

It will be noted from the foregoing description that i have produced an apparatus by means-of which a great saving is cfi'cc'ted in the filtration of slimes resulting from the cyanid process. 7

It will be further noted that the a paratus can be used in any work where a ti ter press is used, thereby promoting economy in such )roccsscs.

it will also be observed that I have provided an apparatus by means of which a continuous and simultaneous filtering, washing, and removal of the slimes is accomplished.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:-

l. A device of the class described, comprising a revolving drum having a plurality of compartments lhcrcin provided wit h ports, sui l drum having a pcrip wry of filtering mahi l: mechanism lor connecting said ports to xhaust during a portion of the revolution of said drum; means for shifting said exhaust connection to a mum-sa compartnu-nt; and

2. A liquid liltcr comprising a frame; a

.gagement with the drum at a pret eterinined drum having a filterin" medium secured to its peripherv revolubliv mounted in said I frmne, said drum having a plurality oi compartments therein and a port leading from each compartment; 11 valve can rotutahly secured to said drum. said cap having a pluralitv of ports adeptedto register with the ports of the drum during its rotation: mechanism for connecting said last named ports to we haust during a portion of the revolution of said drum; means for shifting said exhaust connection to the follouing compartment; and means to rotate said drum.

3. A liquid filter comprising a re,voluble shaft mounted in a frame; a drum rigidly secured to said shaf haviug plurulity of'oomr port leading from each compartment and a periphery or filtering maj teriai; a valve on rotataiily secured tmsaid l iirality of portsudapted to 5' partmen'ts with drum having a p register with the during the rotation of said'drum; means' to create an exhaust iu someof' said compartmen ts and pressure in other of said compartments .simultuneousl t'; means for securing the valve cap to the drum during its rotation; means for releasing said valve ea from enpoint during its rotation ',niean-s for returning said valve cup to its initial position; ant means to rotate said drum.

4. A liquid filter -omprising a revolublc shalt mounted in'ufrzunem drum rigidly se-- eured to said shalt havinga plurality of cornpurimeuts uh a port leading fromeaeh orts leading from the drum.

{comrmrtment and a peripherv of filtering material; a valve cap rotatably secured to said drum having a plurality of orts adapted to register with the ports lea ing from the drum during the rotation of said drum; means to create an exhaust in some of'said compartments and )ressure in other of said compartments simultaneously; means for securing the valve ca to the drum during a portion Ohits rotation; means for releasing said valve can from engagement with the drum at a pre etermined'point during its ro- 5 its init al position; liquid sprays secure the frame adjacent the peri )hery of the drum; detaching means secured to the frame adapted to bear against the periphery of the drum; and means to rotate said drum.

5. 'A liquid filter, comprising a f ame, a drinu provided \vith'a periphery of filtering 5 material and having a plurality of compartments therein provided with ports, said cemypartments having bottoms inclined toward 5 said ports; mechanism for connecting said l ports to exhaust during aportion of the revl 'olution of said drum; means for shifting said i exhaust connection to a following compartment; and means to rotate" said drum.

- In witness that I claim the foregoing I 'itnesses Emwso A. S'raAUsE, G. E; HARPHAM.

l I have hereunto subscribed my name this 9th tation; means for returning said valve cap to e- 

